Excessive Heat Warning — Perry, MO, Bollinger, MO, Cape Girardeau, MO, Wayne, MO, Carter, MO, Ripley, MO, Butler, MO, Stoddard, MO, Scott, MO, Mississippi, MO, New Madrid, MO, Crittenden, KY, Lyon, KY, Trigg, KY, Caldwell, KY, Union, KY, Webster, KY, Hopkins, KY, Christian, KY, Henderson, KY, Daviess, KY, McLean, KY, Muhlenberg, KY, Todd, KY 7:00 PM Heat Advisory — Perry, MO, Bollinger, MO, Cape Girardeau, MO, Wayne, MO, Carter, MO, Ripley, MO, Butler, MO, Stoddard, MO, Scott, MO, Mississippi, MO, New Madrid, MO, Crittenden, KY, Lyon, KY, Trigg, KY, Caldwell, KY, Union, KY, Webster, KY, Hopkins, KY, Christian, KY, Henderson, KY, Daviess, KY, McLean, KY, Muhlenberg, KY, Todd, KY 7:00 PM

Union County, Kentucky, United States

Last updated: 12:13 PM CDT  ·  Refresh
29°C
Feels like 36°
Mostly Cloudy
▲ 34°  /  ▼ 21°
Wind
4 mph SSW
Humidity
79%
Dew Point
26°
Pressure
29.51 inHg
Visibility
7 mi
UV Index
7.3
Cloud Cover
68%
Sunrise
5:50 AM
Sunset
8:05 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Union County is currently mostly cloudy at 29°C. Precipitation is likely — peak probability 65% around 12 AM. Atmospheric instability is elevated (CAPE up to 4254 J/kg) — isolated convective development possible. Sunrise: 5:50AM · Sunset: 8:05PM.

Alerts

Excessive Heat Warning
Perry, MO, Bollinger, MO, Cape Girardeau, MO, Wayne, MO, Carter, MO, Ripley, MO, Butler, MO, Stoddard, MO, Scott, MO, Mississippi, MO, New Madrid, MO, Crittenden, KY, Lyon, KY, Trigg, KY, Caldwell, KY, Union, KY, Webster, KY, Hopkins, KY, Christian, KY, Henderson, KY, Daviess, KY, McLean, KY, Muhlenberg, KY, Todd, KY
Expires 7:00 PM
Heat Advisory
Perry, MO, Bollinger, MO, Cape Girardeau, MO, Wayne, MO, Carter, MO, Ripley, MO, Butler, MO, Stoddard, MO, Scott, MO, Mississippi, MO, New Madrid, MO, Crittenden, KY, Lyon, KY, Trigg, KY, Caldwell, KY, Union, KY, Webster, KY, Hopkins, KY, Christian, KY, Henderson, KY, Daviess, KY, McLean, KY, Muhlenberg, KY, Todd, KY
Expires 7:00 PM
53 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
29°
13%
1 PM
32°
9%
2 PM
33°
14%
3 PM
33°
27%
4 PM
34°
33%
5 PM
34°
34%
6 PM
33°
34%
7 PM
33°
58%
8 PM
32°
59%
9 PM
29°
64%
10 PM
28°
64%
11 PM
27°
64%
12 AM
25°
64%
1 AM
23°
56%
2 AM
23°
61%
3 AM
23°
55%
4 AM
23°
52%
5 AM
23°
52%
6 AM
23°
30%
7 AM
23°
30%
8 AM
24°
34%
9 AM
27°
34%
10 AM
28°
34%
11 AM
29°
38%
7-Day Forecast
Today
34° 21°
Partly Cloudy with a 64% chance of rain.
Mon
35° 21°
Partly Cloudy with a 64% chance of rain.
Tue
34° 21°
Mostly Clear with a 42% chance of rain.
Wed
29° 19°
Mostly Clear with a 42% chance of rain.
Thu
30° 17°
Clear.
Fri
28° 19°
Clear with a 27% chance of rain.
Sat
30° 18°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 29° Mostly Cloudy 13% 4 mph SSW 79%
1 PM 32° Mostly Cloudy 9% 6 mph SW 75%
2 PM 33° Mostly Cloudy 14% 6 mph SW 73%
3 PM 33° Partly Cloudy 27% 6 mph SW 71%
4 PM 34° Partly Cloudy 33% 7 mph SW 70%
5 PM 34° Mostly Clear 34% 7 mph SW 71%
6 PM 33° Mostly Clear 34% 6 mph SW 75%
7 PM 33° Mostly Clear 58% 5 mph SW 78%
8 PM 32° Partly Cloudy 59% 5 mph SSW 79%
9 PM 29° Mostly Cloudy 64% 5 mph SSW 80%
10 PM 28° Mostly Cloudy 64% 6 mph SSW 81%
11 PM 27° Overcast 64% 7 mph SW 86%
12 AM 25° Drizzle 64% 9 mph SW 90%
1 AM 23° Drizzle 56% 10 mph WSW 94%
2 AM 23° Drizzle 61% 9 mph SW 94%
3 AM 23° Rain 55% 8 mph SSW 95%
4 AM 23° Rain 52% 7 mph S 95%
5 AM 23° Overcast 52% 6 mph S 95%
6 AM 23° Mostly Cloudy 30% 5 mph S 95%
7 AM 23° Mostly Cloudy 30% 6 mph SSE 94%
8 AM 24° Mostly Cloudy 34% 5 mph SSE 90%
9 AM 27° Partly Cloudy 34% 5 mph SSE 87%
10 AM 28° Partly Cloudy 34% 5 mph SSE 84%
11 AM 29° Mostly Clear 38% 5 mph SSE 81%
15-Day Forecast
Today
7/26
Partly Cloudy
64%
21°
34°
Mon
7/27
Partly Cloudy
64%
21°
35°
Tue
7/28
Mostly Clear
42%
21°
34°
Wed
7/29
Mostly Clear
42%
19°
29°
Thu
7/30
Clear
9%
17°
30°
Fri
7/31
Clear
27%
19°
28°
Sat
8/1
Clear
19%
18°
30°
Sun
8/2
Drizzle
60%
19°
30°
Mon
8/3
Drizzle
60%
19°
31°
Tue
8/4
Drizzle
60%
21°
32°
Wed
8/5
Drizzle
60%
22°
33°
Thu
8/6
Drizzle
60%
21°
32°
Fri
8/7
Drizzle
60%
20°
31°
Sat
8/8
Drizzle
60%
20°
32°
Sun
8/9
Drizzle
60%
21°
32°
53
Moderate
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
53 AQI 10.2 µg/m³
O3
Ground-level ozone
32 AQI 36 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 53 Moderate 32 53
Tue 48 Good 34 48
Wed 47 Good 38 47
About the Air Quality Index
0–50 Good
51–100 Moderate
101–150 Unhealthy for Sensitive Groups
151–200 Unhealthy
201–300 Very Unhealthy
301–500 Hazardous

The U.S. AQI runs 0–500. The overall value equals the highest individual pollutant sub-index, and the dominant pollutant is the one driving it. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Sun Jul 26, 15:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE3985 J/kg
MLCAPE2590 J/kg
MUCAPE3985 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-6.5
Kinematics
0–6 km Shear25 kt
0–1 km Shear7 kt
Eff. Shear32 kt
0–1 km SRH-8
0–3 km SRH-57
Eff. SRH-57
Storm Motion299° @ 20 kt
0–1 km EHI-0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index23.9
Thermo & Levels
PWAT1.68 in
0–3 km LR5.9 °C/km
700–500 LR5.5 °C/km
Total Totals45.7
LCL947 hPa
LFC999 hPa
EL143 hPa
Freezing Lvl16,870 ft